In foggy conditions, what lighting should you use?

Answer: B — Low beam headlights

In foggy conditions, using low beam headlights is essential for maintaining visibility and ensuring safety. Low beam headlights project light downwards and towards the road, which helps illuminate the area directly in front of your vehicle without causing glare. This is particularly important in fog because fog can refract light, causing high beams to create a blinding effect that may hinder your visibility as well as that of other drivers. Low beams allow you to see the road clearly and make it easier for other road users to see you. They also reduce the chance of light reflecting off the fog and back into your eyes, which could otherwise create a whiteout effect. Therefore, using low beam headlights is the most appropriate choice for driving safely in foggy conditions.